Master controller unit for a locomotive train



FIG. 1 is a front elevational view of a master controller unit for a locomotive train showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a front elevational view of a master controller unit for a locomotive train showing second embodiment of our new design;

FIG. 8 is a top plan view of FIG. 7;

FIG. 9 is a rear elevational view of FIG. 7;

FIG. 10 is a right side elevational view of FIG. 7;

FIG. 11 is a left side elevational view of FIG. 7;

FIG. 12 is a front elevational view of a master controller unit for a locomotive train showing a third embodiment of our new design;

FIG. 13 is a top plan view of FIG. 12;

FIG. 14 is a rear elevational view of FIG. 12;

FIG. 15 is a right side elevational view of FIG. 12; and

FIG. 16 is a left side elevational view of FIG. 12. 

The ornamental design for a master controller unit for a locomotive train, as shown and described. 